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Electric Tankless Water Heaters
ThermoPro Series
18kW, 24kW, 27kW
www.atmorusa.com
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Important Safety Guidelines
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result
WARNING: Indicates a potentially hazardous situation which, if not avoided, could
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result
(Used without word) Indicates a safety related message.
SAVE THIS INSTRUCTION MANUAL FOR FUTURE REFERENCE.
Definitions: Safety Alert Symbols and Words
This instruction manual uses the following safety alert symbols and words to alert you to
hazardous situations and your risk of personal injury or property damage.
in death or serious injury.
result in death or serious injury.
in death or serious injury.
NOTICE: Indicates a practice not related to personal injury which, if not avoided, may
result in property damage.
WARNING: READ THIS INSTRUCTION MANUAL THOROUGHLY AND COMPLETELY
BEFORE INSTALLATION AND USE. FAILURE TO DO SO COULD CAUSE DAMAGE TO
PROPERTY, SERIOUS INJURY OR DEATH, AND VOID YOUR WARRANTY
Contact service directly if you have any questions regarding your unit.
Monday – Friday, 9AM–5PM EST
Phone: 1-888-783-6082
Email: info@paragongroupusa.com
WARNING: Cancer and Reproductive Harm –
www.P65Warnings.ca.gov.
AVERTISSEMENT: Cancer et Troubles de l'appareil
reproducteur – www.P65Warnings.ca.gov.
ADVERTENCIA: Cáncer y Daño Reproductivo –
www.P65Warnings.ca.gov.
For California residents / Pour les résidents de la Californie / Para residentes en California
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Table of Contents
1. Safety Guidelines ------------------------------------------------------------------------------------------ 4
2. About Your Atmor Electric Tankless Water Heater ----------------------------------------------- 4
3. Selecting an Installation Location --------------------------------------------------------------------- 5
4. Mounting the Water Heater ----------------------------------------------------------------------------- 6
5. Plumbing Requirements and Precautions ----------------------------------------------------------- 7
6. Plumbing Installation -------------------------------------------------------------------------------------- 8
7. Electrical Requirements and Precautions ----------------------------------------------------------- 9
8. Electrical Installation ------------------------------------------------------------------------------------ 10
9. Flow Rate -------------------------------------------------------------------------------------------------- 12
10. Operation Guide------------------------------------------------------------------------------------------ 12
11. Care and Maintenance --------------------------------------------------------------------------------- 13
12. User Interface/Controls --------------------------------------------------------------------------------- 14
13. Troubleshooting ------------------------------------------------------------------------------------------ 16
14. Reset Unit -------------------------------------------------------------------------------------------------- 18
Before Installing
By installing this product, you acknowledge the terms of the manufacturer’s warranty and
authorized dealer’s return policy. Once the heater is installed, do not return the product to
the place of purchase. If you have any questions regarding the warranty or the product return
policies, contact Atmor by phone or email.
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1. Safety Guidelines
Read this manual thoroughly before installing and using the instant water heater. Failure to
comply with the safety, installation or operating instructions will void the product warranty.
The product manufacturer and the product distributor will not be liable for any damages or
injury caused by failure to comply with the installation and operating instructions specified in
this manual or by improper use of the product. For best performance, ensure that this water
heater is installed in accordance with all electrical and plumbing codes applicable to your
area, and as specified in this guide.
This product has more than one power supply connection point. Do not attempt to install,
clean, inspect, disassemble, service or repair the water heater without first shutting off all the
power to the unit by means of the circuit breakers on the main electrical panel.
WARNING: Failure to adhere to the safety guidelines might result in severe injury or
death. The water heater must be installed in compliance with all national, state,
provincial and local electrical and building regulations. We recommend that you consult
a qualified electrician and a qualified plumber in case you have questions about
anything relating to codes for this product.
This product is intended for household and indoor use only. Do not immerse in water.
Each breaker used to power this unit must be grounded by means of the electrical
panel.
The heater must be connected directly to dedicated circuit breakers on the main
electrical panel.
Do not install the heater where it may be subjected to direct sunlight, rain, splashing
water, moisture/humidity or freezing temperatures.
This unit is intended for heating water only. Do not attempt to use the unit for heating
any other kind of liquid.
2. About Your Atmor Electric Tankless Water Heater
Congratulations on your decision to purchase one of the finest instant water heaters
currently available in the market! Your new instant water heater has advanced water flow
rate and temperature sensors that are designed to modulate power to the heating elements
to maintain a user-selected output water temperature range for 18kW/ 24kW/ 27kW: 86°F
(30°C) to 122°F (50°C) (subject to the temperature of the incoming water).
WARNING: When setting the water temperature of the instant water heater, be sure to
consider safety and energy conservation. Prolonged skin exposure to water temperatures
above 120°F (49°C) can result in severe burns or death. The maximum temperature setting
on this instant water heater is 122°F (50°C). Always take precaution to feel the water before
bathing or showering, and make sure the temperatures are not too hot. You are required to
read and comply with the following Time/Temperature Relationship chart to determine the
right water temperature for your home.
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Temperature
Exposure Time Resulting in Scalding
120°F (49°C) 5 minutes of exposure
122°F (50°C)
3 minutes of exposure
ThermoPro 18
13-3/8 x 17-3/8 x 5-1/4
17
3/4"
If you have small children, disabled, or elderly persons in
your home, you may require a setting of 120°F (49°C) or
lower to ensure their safety. Water temperature is
regulated by the knob on the front of the water heater
3. Selecting an Installation Location
• This water heater is designed for indoor installation only.
• The heater should not be installed in a location where it might
be subjected to freezing temperatures, since frozen water in
the unit can cause severe and irreversible damage which is
not covered under your warranty.
• The water heater should be placed in a location that is easy
to access.
• Ensure that the water heater, as well as the power
• Children, disabled and
elderly are at high risk
of being scalded.
• See instruction manual
before setting your
desired hot water
temperature.
• Always feel water
before bathing or
showering.
supplies and water connections, are out of the reach of children to prevent them
tampering with controls or touching an extremely hot pipe.
• Do not install the unit where it is may be exposed to excessive humidity, moisture or
dust, or where it may be splashed with water or other liquids.
• Do not install the unit below water pipes or air conditioning lines, where it is susceptible
to leaking or dripping water or other liquids.
• Do not install the unit above electrical boxes or junctions.
• If possible, avoid installation in a location that could be damaged due to leakage from the
water heater. Install a drip pan with drainage, or an active leak detector and automatic
shutoff valve, to prevent damage in case of a leak.
Item # Unit dimensions (inches) Weight (lbs) Connections
ThermoPro 24 13-3/8 x 17-3/8 x 5-1/4 17 3/4"
ThermoPro 27 13-3/8 x 17-3/8 x 5-1/4 17 3/4"
WARNING: Water heater are heat-producing appliances. To avoid damage, injury or
death, the water heater must be installed in a manner that prevents contact with any
substances or materials, and proper care must be taken to prevent unnecessary
contact (especially by children) with the water heater. UNDER NO CIRCUMSTANCES
SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER,
BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR ANY
LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER.
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4. Mounting the Water Heater
1. The instant water heater must be secured to solid mounting surface with four screws
(minimum 1” (25.4mm) long).
2. Make sure the unit is level before fastening the screws.
3. The unit must be installed in an upright position with the water inlet and outlet at the
bottom of the unit. Do not install with connections on top or the sides.
4. Do not install the unit above electrical boxes or junctions.
5. The water heater must be installed in a manner that prevents contact with flammable
materials. Keep flammable material at least two feet away from the heater and the hot
water outlet pipe. The water heater and the hot water outlet pipe must be secured, and
out of children’s reach to prevent tampering with controls or contact with an extremely
hot pipe.
6. If installing the heater on an upper floor or attic, make sure installation complies with the
local codes. Install a drip pan with drainage, or a leak detector and automatic shutoff
valve, to prevent damage in case of any leakage.
7. Unscrew the 4 cover screws, and remove the unit cover. (Figure 1)
8. Disconnect the cables from the PCB within the unit. (Figure 2)
9. Use 4 mounting screws that are at least 1 inch (25.4mm) in length, mount the unit on the
wall. (Figure 3)
10. Make sure the unit is leveled horizontally, with water inlet and outlet at the bottom.
(Figure 4)
Figure 1
Do not install upside down or on its side.
Figure 2
Figure 3
Figure 4
Figure 5
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Recommended clearances: 12" (304.8 mm) above and below the heater
6" (152.4 mm) in front of and to the sides of the heater
CAUTION: Keep any flammable materials at least 24" (609.6mm) away from the water
heater and hot water outlet pipe.
5. Plumbing Requirements and Precautions
• Follow all plumbing instructions carefully. This product must be installed in accordance
with all national, state, provincial, and local plumbing codes. Prior to installation, it is
recommended that you consult your municipality or a qualified plumber if you have
questions relating to plumbing codes for your area.
• The plumbing installation must be completed before the electrical installation.
• Do not solder any pipe with the unit connected to the pipe. The
heat from soldering may cause damage to the flow sensor.
Doing so will void the warranty.
• The use of a temperature pressure relief valve (T&P) is not
required for most installations because the tankless water
heater does not use a storage tank. UL Standard 499 does not
require the use of pressure relief valve, although it may be
needed to meet installation codes in your area. In such cases,
the pressure relief valve should be installed in accordance with
local codes. It is important to ensure that the unit is operating
correctly, and that air is purged from the valve prior to installing
the water heater.
• A T&P valve is recommended for added safety when connecting to plumbing rated metal,
flex or high-temperature CPVC piping.
NOTE: A pressure relief valve is required for installations in the Commonwealth of
Massachusetts and State of Kentucky. Check your local installation codes for any
special requirements.
• The plumbing installation requires piping that can withstand pressure up to 8 bar.
• The maximum operating water pressure for this unit is 10 bar (150 psi). Residential
plumbing systems with unstable pressure or pressure above 5 bar require the application
of a pressure reduction valve set to 4-5 bar for optimal performance.
• The water supply flow rate must be at least 0.5 gallons per minute (gpm) to ensure
proper operation.
• Flexible water hoses are recommended for use with your water heater. When connecting
the inlet water pipe to the unit, use a wrench to hold the unit’s connection, and another
wrench to tighten so that the flow sensor on the unit will not be loosened or damaged. Do
not over-tighten the water inlet and outlet connections to prevent severe internal damage
to the water heater.
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• It is recommended to install a manual shut-off valve (ball valve) on the inlet and outlet of
Water connections
3/4" NPT
the water heater to create a convenient shut-off point if future maintenance or servicing is
required.
• Before connecting the pipes to the water heater, it is crucial to flush the lines to eliminate
all the plumbing paste or residue in the lines caused by any welding or soldering.
• It is recommended that all water pipes within 3 feet (1 meter) of the inlet and outlet
connections be rated for high-temperature applications with 150°F (66°C) minimum.
• Before proceeding to the electrical installation, run water through the unit for several
minutes to flush out any air bubbles from the water line.
6. Plumbing Installation
STEP 1: Thoroughly flush the cold water supply line of all debris.
STEP 2: Connect the hot water line to the water heater outlet. The water heater outlet is on
the left side of the heater when facing the unit. Connect the cold water line to the water
heater inlet, which is on the right side when facing the unit.
STEP 3: After tightening both fittings on the water heater, turn on several hot water faucets
to allow water to flow through the water heater for at least 2 to 3 minutes. This process
purges all the air from the water lines and must be performed before turning on the power at
the unit.
WARNING FAILURE TO PERFORM THIS STEP COULD CAUSE PERMANENT
DAMAGE TO THE HEATING ELEMENTS.
STEP 5: Carefully inspect all connections, units, and the pressure relief device for leaks after
the plumbing installation is completed. If there are no leaks present, you can proceed to the
electrical installation.
CAUTION: If you detect a water leak from the water heater at this point, turn off the
water supply at the shut off valve on the unit’s incoming water supply and contact service at
1-888-783-6082.
Plumbing Specifications
Minimum water flow to activate unit 0.5 gpm
Working pressure 0.5–10 bar (7–145 psi)
Tested pressure 20 bar (290 psi)
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7. Electrical Requirements and Precautions
tempting to install, repair or disassemble
Code (CEC) in Canada. Failure to do so could lead to property damage, personal injury,
Manufacturer recommends that this product be installed in accordance with all applicable
national, state, provincial, and local electrical codes. Consult a qualified and licensed
electrician if you have questions or are unsure about anything relating to codes for this
product. The heater must be connected to a dedicated circuit breaker on the main electrical
panel.
WARNING: As with all electrical appliances, it’s crucial to first shut off all power to the
unit directly at the fuse or breaker box before at
this water heater. Ensure that the breaker is shut off. SERIOUS BODILY INJURY OR
DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
CAUTION: All wiring (wire gauge), as well as circuit protection (breaker), must comply
with the U.S. National Electrical Code (NEC) in the USA or the Canadian Electrical
and void your warranty.
Note: The Canadian Electrical Code generally requires that all supply wires and
corresponding circuit protection used for domestic hot water heating and hydronic heating
applications be sized to a minimum of 125% of the maximum current rating of the heater
(check heater specification details below)
Before installing this tankless water heater, ensure that sufficient electrical power is
available in the home to handle the maximum amperage load of the applicable heater.
IMPORTANT NOTES:
24kW and 27kW heater requires 3 sets of wire and ground (see wiring diagram on page 11).
Refer to the electrical specifications by heater input and wiring diagram on page 11 for
additional electrical information.
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8. Electrical Installation
STEP 1: Take the wire pair and connect to the breaker. Be sure that the breaker is
connected to one black wire and one red wire. Be sure the power to the unit is shut off using
the dedicated circuit breakers in the main electrical panel.
STEP 2: Run the correct set of power cable wires from the circuit breaker in the main
electrical panel to the water heater by utilizing a suitable wire gauge which meets all
applicable electrical codes for the size of the breaker. Then, connect the power cable to the
block terminal within the water heater.
STEP 3: Each incoming circuit requires a separate ground conductor.
STEP 4: DOUBLE CHECK The electrical connections and ensure the wire connections
are correct, tight and secure. It’s important to confirm that the right breaker size and wire
gauge has been used and that the unit has been connected to a ground in accordance with
applicable codes. Be sure to reattach the front cover of the unit with four screws.
STEP 5: Ensure that all the air has been purged from the water lines before turning on
power to the unit. Restore power to the unit through the dedicated circuit breaker in the main
electrical panel.
It is crucial to follow the wire connection as shown and ensure all connections are
made correctly for proper operation of the unit. The unit will not operate correctly if you
mix up the wire sets, even though it turns on and otherwise appears to function.
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Electrical Specifications by Heater Input
ThermoPro 24
24
100 A
3 x 40A double pole
3 x 8 AWG with ground
ThermoPro 27
27
112.5 A
3 x 40A double pole
3 x 8 AWG with ground
ThermoPro 27
27,000 Watts
22,687 Watts
20,280 Watts
Item kW Max. Amps Required Breaker Required Wire Size
ThermoPro 18 18 75 A 3 x 30A double pole 3 x 8 AWG with ground
Power Rates
Item 240V 220V 208V
ThermoPro 18 18,000 Watts 15,000 Watts 13,500 Watts
ThermoPro 24 24,000 Watts 20,166 Watts 18,026 Watts
Wiring Diagram
Your tankless water heater is now installed and ready to use! Follow the general Operation
instructions to complete the setup.
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9. Flow Rate
Item
kW
36°F
45°F
54°F
63°F
74°F
81°F
ThermoPro 27
27
4.9
4
3.3
2.8
2.5
2
The following chart indicates maximum temperature rise for a given flow rate.
Inlet Ground Water Temperature
ThermoPro 18 18 3.6 2.85 2.4 2 1.7 1.6
ThermoPro 24 24 4.5 3.6 3 2.5 2.2 2
Based on 105°F output water temperature
10. Operation Guide
Operating your new tankless water heater is like using any traditional water heating system.
However, it is essential that you carefully read all setup procedures and operating
instructions to ensure the maximum performance and energy savings from your new water
heater. It is recommended that all members of your household read these operating
Instructions.
This electric water heater is designed to supply hot water. The unit’s internal heating
elements are capable of heating water quickly on-demand for as long as you need it. Unlike
a conventional tank storage water heater, this unit is a tankless water heater that does not
store hot water. However, once you begin using the system, you will understand it works like
a conventional tank system.
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Tankless system delivers hot water instantaneously on demand. Since a tankless system
does not waste energy continually when heating water, that is, idly sitting and losing heat in
a storage tank, it provides significant energy savings than a conventional water heater.
With your new system, as soon as you turn on the hot water faucet, the demand for hot
water is detected by a flow sensor, and the high-power heating elements are activated.
Sensors continually monitor the water flow rate and measure the incoming and outgoing
water temperature. Data is transmitted to the system logic controls, which determine the
exact amount of power required by heating elements to heat the water to your desired
temperature.
It is essential to keep in mind that all tankless water heaters are subject to a maximum flow
rate. If this flow rate is exceeded, the heater will not be capable of sufficiently heating water.
Also keep in mind that conventional tank heaters are set to high temperatures to prevent
running out of hot water quickly, and thus a large amount of cold water needs to be mixed in
to reach a comfortable level for washing and showering. Since this unit heats water on
demand, it is designed to heat to a lower temperature. This means you only need to mix in a
small amount of cold water or none at all.
Your hot water supply may also be affected by the incoming water temperature as the
seasons change. During winter, if incoming water temperature is very cold, you might not be
able to run multiple hot water outlets at the same time, as in the summer. However, you can
run showers back-to-back without having to wait for water to heat.
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Water Quality: The quality of water must be taken into consideration when installing and
Recommended Water Quality Levels
pH
Solid (TDS)
6.5 –
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
to
mg/L
mg/L
to
mg/L
maintaining the water heater. Water conditions that do not comply with the recommended
levels can damage the water heater. Atmor reserves the right to deny any warranty claim for
damage resulting from water conditions that deviate from the levels specified in the table
below.
To prevent damage to the heat exchanger and heating elements, the water must be treated,
and the heater must be flushed regularly when this unit is installed in a location known to
have hard water that causes scale build-up. Atmor recommends the installation of a water
treatment device or water softener to maintain optimal performance of the water heater in
hard water areas.
8.5
Total
Dissolved
Up to
500
Free
CO2
Up to
500
Total
Hardness
Up to
200
Aluminum Chloride Copper Iron Manganese Zinc
Up to
0.2
Up to
250
Up to
1.0
Up
0.3
Up to
0.05
Up
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11. Care and Maintenance
To ensure maximum performance of your water heater and to reduce the risk of a water leak,
the following maintenance is recommended:
• The water heater has minimal maintenance requirements. Periodically inspect and test
the heater for signs of damage or failure. Any damage, cracks, leakage or weakness
should be addressed and fixed immediately.
• Remember that water heated at higher temperatures produces scale buildup much faster
than at lower temperatures. Plumbing connections on the water heater should be
inspected at least once a year for any signs of damage or failure. If the water supply has
a high level of mineralization (hard water), the water heater should be inspected and
descaled more frequently. Installing a manual shut-off on the inlet and outlet of the water
heater will allow access for flushing the unit with a descaling solution.
• Clean the filter on the water inlet pipe once every six months. Wash lightly to remove any
debris.
• Check the wire connections once every two years, and make sure they are properly
tightened and secure.
When any form of maintenance is carried out on the water heater or the home’s plumbing
system that may introduce air into the plumbing, it is crucial to power off the water heater
and purge the air from all pipes before allowing the unit to power up.
FAILURE TO DO SO COULD RESULT IN PERMANENT DAMAGE TO THE HEATING
ELEMENT AND VOID YOUR WARRANTY.
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When air is introduced into the plumbing system, follow the steps below to ensure the unit
CAUTION: A higher temperature setting is not recommended, as it can cause serious
can safely resume operation.
1. Shut off all power to the unit at the circuit breaker on the main electrical panel.
2. Perform the maintenance or servicing tasks.
3. Open one or more hot water faucets and allow water to run through the unit for several
minutes to purge any air from the heater and water lines.
This step must be performed before turning on power to the heater.
Failure to perform this step may cause permanent damage to the heating elements.
4. Reconnect power to the unit at the circuit breaker on the main electrical panel.
5. With water running through the unit, check the temperature and adjust by turning the
knob. The recommended temperature setting is 118°F (48°C).
12. User Interface/Controls
Power
• Turn the knob to the right (clockwise) to activate the heater.
The display will light up.
• Turn the knob all the way to the left (counterclockwise) to turn
off the heater.
Setting the Output Water Temperature
• To set the temperature, turn on a hot water faucet and allow
water to run through the heater. Turn the knob clockwise to
activate the heater and display the outlet temperature.
• To raise the temperature setting, turn the knob clockwise.
To lower the temperature, turn the know counterclockwise.
• The temperature can be set to a level from 86°F to 122°F (30°C to 50°C).
• A comfortable temperature for bathing and showering is between 98°F and 105°F (37°C
to 41°C).
• The recommended temperature setting is 118°F (48°C), which will deliver hot water for
all household needs at a maximum water flow rate.
scalding injuries to children and elderly persons. Higher temperatures also produce
more scale buildup in water heating devices.
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Starting the System for the First Time
1. With the water running through the unit, turn the temperature knob clockwise to activate
the heater.
2. Turn the knob to adjust the temperature.The recommended temperature setting is 118°F
(48°C).
Freezing Temperatures
If the ambient temperature falls below 32°F (0°C), protect the heater from potential damage.
Power off the unit using the dedicated circuit breaker on the main electrical panel. Open a
faucet slightly to cause water to flow continuously through the device at a very low rate,
without heating. Restore power to the unit when temperature condition is normal.
If the water inside the heater freezes, it can cause damage that is not covered by
warranty. If you suspect water has frozen within the unit, do not turn it on until you are sure
the frozen water has melted, and there are no leaks in the unit. It is recommended to contact
a qualified electrician or the manufacturer for service in this situation.
A. Temperature setting knob
B. Digital temperature display
C. Hot water outlet
(to be connected to the main hot water pipe)
D. Cold inlet
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13. Troubleshooting
Power outage or faulty
gpm) has
Clean the filter screen on the unit’s water inlet.
flow rate.
too low.
Water pressure is less
than 0.5 bar (7 psi).
Make sure the shutoff valve is fully open, and
the water supply line is not blocked.
reduce the amount of cold water mixed.
Before calling for service, check the troubleshooting list of common issues.
If you are unable to resolve a problem, contact your local authorized distributor.
PROBLEM / ISSUE POSSIBLE CAUSE SOLUTION
No hot water and
display do NOT
light up
No hot water and
display DOES light
up
Water is heated,
but not hot enough.
wiring.
The flow rate needed
to activate the heating
element (0.5
not been reached.
Reset the unit
Potential internal part
failure
The water flow rate
exceeds the heating
capacity of the heater.
Check the power supply. Check the circuit
breakers.
Make sure the breakers at main electrical
panel are ON. You may have a faulty breaker
or unit may be wired incorrectly.
Make sure the shutoff valve on the unit’s
incoming water supply line is fully open.
Increase the flow rate from the water supply
source.
Refer to diagram (page 18) for reset points.
Make sure to shut all power on your
breaker panel before attempting to reset unit.
All resets must be pressed.
Please call us for further technical assistance.
Reduce the water flow rate at the faucet or
slightly close the shutoff valve on the unit’s
incoming water supply line to reduce the water
Voltage less than
240 volts
Crossed wires. If it’s a new installation, double check the
Temperature setting is
Mixing too much cold
water
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The heating elements on your water heater
are designed for 240 volts. When used with a
lower voltage, they produce less heating
power. You may need to upgrade to a larger
input heater.
wiring to confirm that it is correct.
Increase the temperature setting on the unit.
You do not need to mix as much cold water
with your tankless water heater compared to
when you use a conventional water heater.
You may also have an anti- scald feature on
your faucet that is mixing cold water. These
types of faucets can usually be adjusted to
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PROBLEM / ISSUE
POSSIBLE CAUSE
SOLUTION
Water is heated,
Water is too hot.
The water flow rate
Increase the flow rate at the water outlet.
Temperature setting is
Switch to a lower temperature setting.
Water Temperature at
Check for too little flow, or if the set point
Power outage or faulty
Water stops
Possible Blockage in
Make sure the main water line valve is fully
but not hot enough.
Thermal loss due to
long pipe run.
As the hot water from the heater runs through
the hot water delivery system to your faucet,
some heat will be lost especially if it has long
distance to travel or the pipes are cold. This is
normal. You can compensate for this by
increasing the setting on your water heater if
you need/ want hotter water.
Heater shuts off
during use.
Voltage less than
240 volts
through the heater is
too slow.
too high
faucet is too hot.
wiring.
The computer chips in your tankless water
heater are programmed with the expectation
that your incoming line voltage is 240 volts. If
you have less than 240 volts (i.e., 208V or
220V), it may affect the reading on your water
heater’s digital display and cause it to read
slightly higher than the actual output
temperature. To compensate for this, increase
the setting on your water heater if you need or
want hotter water.
temperature is too high. This could possibly
indicate a possible internal part failure. Call us
for technical assistance.
Check the power supply. Check the circuit
breakers.
If the problem persists, please call us for
flowing.
Water temperature
varies from hot to
cold during use.
water pipes or hoses.
Water pressure has
dropped below a
minimum level.
further technical assistance.
open, and there are no obstructions in the
water supply line.
Increase the flow rate from the water supply
source.
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14. Reset Unit
WARNING: SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE
As with all electrical appliances, it is crucial to first shut off all power to the unit directly at the
fuse or breaker box before attempting to reset this water heater.
THIS WARNING.
Locate the three reset button locations as shown below and press all buttons. If you hear a
“click,” the unit has reset. If you find that the unit needs to be reset quite often, please call
our customer service for further assistance. Proceed to turn on your breakers and power on
the unit.
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LIMITED WARRANTY
For service, repair or any questions regarding your water heater, call the appropriate 800
number listed within this section. Please DO NOT return the product to the place of
purchase. Also, DO NOT mail the product back to the manufacturer, nor bring it to a service
center without proper instructions and permission from one of our representatives.
The terms of this warranty are solely subject to the original owner and are at no time
transferable. A transfer of ownership will result in immediate termination of this warranty.
This warranty is valid only if the product is purchased from an authorized reseller that has an
established direct relationship with the manufacturer.
The manufacturer warrants to the original owner that our instant water heaters will be free
from defect in workmanship and material for TWO YEARS from the date of purchase, and
free from leakage for SEVEN YEARS from the date of purchase. Should any part(s) prove to
be defective during this period, the manufacturer will only be responsible for a replacement
water heater or replacement of the defective part(s). The manufacturer is not responsible for
labor charges or any incidental or consequential expenses. If a replacement water heater or
part is not available, the manufacturer’s liability is limited to the cost of the water heater or
$1,000.00, whichever is less. The manufacturer is not an insurer, and the original owner
should purchase insurance to cover damage to property or belongings. The original owner
agrees to waive their right to jury trial or to participate in a class action. Also, the original
owner agrees to waive subordination to the extent a loss is covered by insurance, so that
their insurance company cannot proceed with action against the manufacturer for recovery of
any claims. Furthermore, all requests must be arbitrated in the state of New Jersey.
Should the owner wish to return the water heater for repair, the owner must first secure
written authorization from the manufacturer. The owner shall be required to show proof of
purchase date and to pay all transportation costs to return the defective part(s) or water
heater for repair or replacement. Warranty is void if: (i) water heater has been installed or
used improperly; (ii) design has been altered in any way; (iii) water heater has been installed
and/or serviced by someone other than a licensed electrician; (iv) or if the water heater has
been installed or used in contradiction to installation instructions, applicable laws and/or
ordinances.
Imported by:
PARAGON GROUP USA LLC
Englewood, NJ 07631
USA
Phone: 1-888-783-6082
Email: info@paragongroupusa.com
Web: www.atmorusa.com
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